Shielded Flat Cable

Abstract

A shielded flat cable (100, 200, 300) includes a plurality of conductors (110) arranged in a row along a first plane (101), a resin insulating layer (130) which sandwiches the first plane and covers the conductors, a shield layer (140, 240) including an adhesive, covering the outer surface of the resin insulating layer, and a pair of flame-retardant resin films (160) covering the outer surface of the shield layer, wherein: the pair of resin films (160) each include a first bonded portion (11) and a second bonded portion (12) which are bonded together; the outer peripheral surface of the shield layer includes a first planar surface (21) in contact with the first bonded portion, and a second planar surface (22) in contact with the second bonded portion; and the shield layer (140, 240) includes a third bonded portion (150, 250A, 250B) in which the adhesive is bonded together.

Description

[Technical field]

[0001] The present disclosure relates to a shielded flat cable. [Background technology]

[0002] Patent Document 1 discloses a flat cable that has multiple parallel conductors, resin insulating films attached from above and below, and a connection terminal at at least one cable end that is connected to an electric connector. A shielding metal foil film is placed on the resin insulating film with its metal surface facing outward, and the metal foil film is covered with a protective resin film except for the ground connection portion that is connected to ground. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2011-198687 Summary of the Invention

[0004] The shielded flat cable of the present disclosure comprises a plurality of conductors arranged in parallel along one another on a first surface, a resin insulation layer sandwiching the first surface and covering the conductors, a shielding layer having an adhesive covering the outer surface of the resin insulation layer, and a pair of flame-retardant resin films covering the outer surface of the shielding layer, the pair of resin films having a first bonding portion and a second bonding portion bonded to each other, the outer surface of the shielding layer having a first plane with which the first bonding portions contact and a second plane with which the second bonding portions contact, and the shielding layer having a third bonding portion where the adhesives are bonded together. [Brief description of the drawings]

[0005] [Figure 1] FIG. 1 is a cross-sectional view showing a shielded flat cable according to a first embodiment. [Diagram 2]FIG. 2 is a cross-sectional view showing a shielded flat cable according to a second embodiment. [Diagram 3] FIG. 3 is a cross-sectional view showing a shielded flat cable according to a third embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a shielded flat cable according to a fourth embodiment. [Diagram 5] FIG. 5 is a cross-sectional view showing a shielded flat cable according to a fifth embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing a shielded flat cable according to a sixth embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing a shielded flat cable according to a seventh embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing a shielded flat cable according to an eighth embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing a shielded flat cable according to a fourth embodiment in which a cavity is formed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0006] [Problem that this disclosure aims to solve] There is a demand for improved flame retardancy in shielded flat cables used for transmitting high-frequency signals.

[0007] [Effects of this disclosure] According to the present disclosure, the flame retardancy of a shielded flat cable can be improved.

[0008] The embodiments for carrying out the invention are described below.

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be described. In the following description, the same or corresponding elements are denoted by the same reference numerals, and the same description thereof will not be repeated.

[0010] [1] A shielded flat cable according to one embodiment of the present disclosure comprises a plurality of conductors arranged in parallel along a first surface, a resin insulation layer sandwiching the first surface and covering the conductors, a shielding layer having an adhesive covering an outer surface of the resin insulation layer, and a pair of flame-retardant resin films covering the outer surface of the shielding layer, wherein the pair of resin films have a first bonding portion and a second bonding portion bonded to each other, an outer peripheral surface of the shielding layer has a first plane with which the first bonding portions contact and a second plane with which the second bonding portions contact, and the shielding layer has a third bonding portion where the adhesives are bonded to each other.

[0011] In the shielded flat cable according to one embodiment of the present disclosure, there is a risk of flame penetrating the first bonding part and the second bonding part, but because the first plane is in contact with the first bonding part and the second plane is in contact with the second bonding part, the closed state of the shield layer is maintained even if flame penetrates. Therefore, the resin insulation layer is protected by the shield layer, and excellent flame retardancy is obtained.

[0012] [2] In [1], an end of the third bonded portion may be spaced apart from the first bonded portion and the second bonded portion, thereby obtaining better flame retardancy.

[0013] [3] In the above [1] or [2], the third bonding section is From the side of one end of the resin insulation layer in the second direction in which the plurality of conductors are arranged in parallel a first portion extending in a first direction perpendicular to the first surface; Record number and a second portion extending in two directions toward the other end of the resin insulation layer, in which case better flame retardancy can be obtained.

[0014] [4] In [3], an end of the third bonding portion may be located at a position overlapping the resin insulating layer in the first direction, thereby obtaining better flame retardancy.

[0015] [5] In any of [1] to [4], the third bonding portion may have a tightening portion that is tightened at a side of one end of the resin insulating layer in the second direction in which the plurality of conductors are arranged in parallel. In this case, better flame retardancy can be obtained.

[0016] [6] In any one of [1] to [5], the shielding layer is Resin insulation layer The adhesive of one of the shielding layers may be attached to the adhesive of the other of the shielding layers at the third bonding section. In this case, the shielding layers can be easily processed.

[0017] [7] A shielded flat cable according to another embodiment of the present disclosure comprises a plurality of conductors arranged in parallel along a first surface, a resin insulation layer sandwiching the first surface and covering the conductors, a shielding layer having an adhesive covering an outer surface of the resin insulation layer, and a pair of flame-retardant resin films covering the outer surface of the shielding layer, wherein the pair of resin films have a first bonding portion and a second bonding portion bonded to each other, an outer peripheral surface of the shielding layer has a first plane with which the first bonding portion contacts and a second plane with which the second bonding portion contacts, and the shielding layer has a third portion covering one surface of the resin insulation layer parallel to the first surface and reaching the first plane, and a fourth portion covering the one surface of the resin insulation layer from above the third portion.

[0018] The present disclosure other According to one embodiment of the shielded flat cable, excellent flame retardancy is obtained, and the shielding layer is easily processed.

[0019] [8] In the above [7], the shielding layer is Resin insulation layer The third portion may be included in one of the shield layers and the fourth portion may be included in the other of the shield layers, which makes it easy to process the shield layers.

[0020] [9] In any of [1] to [8], the shielding layer may be disposed between the first and second bonding parts in a second direction in which the conductors are arranged in parallel, whereby it is easy to dispose a pair of resin films so as to cover an outer surface of the shielding layer.

[0021]

[10] A shielded flat cable according to another embodiment of the present disclosure comprises a plurality of conductors arranged in parallel along a first surface, resin insulation layers sandwiching the first surface and covering the conductors, and a shielding layer having an adhesive and a flame-retardant resin film covering an outer surface of the resin insulation layer, wherein the shielding layer has a second surface and a third surface opposite the second surface, the adhesive is provided on the second surface, the resin film is provided on the third surface, the adhesive is disposed on the resin insulation layer side of the resin film, and the shielding layer has a fifth portion covering at least a portion of one surface parallel to the first surface of the resin insulation layer, and a sixth portion covering the one surface of the resin insulation layer from above the fifth portion.

[0022]

[11] In the above

[10] , the fifth portion is a third portion in which the plurality of conductors are arranged in parallel. 2 In this case, the shielding layer can be easily processed.

[0023]

[12] In the above

[10] or

[11] , the shielding layer is Resin insulation layer The fifth portion may be included in one of the shield layers and the sixth portion may be included in the other of the shield layers, which makes it easy to process the shield layers.

[0024] [Details of the embodiment of the present disclosure] Hereinafter, the embodiments of the present disclosure will be described in detail, but the present embodiments are not limited thereto. In this specification and drawings, components having substantially the same functional configurations may be given the same reference numerals to avoid redundant explanation. For convenience of explanation, an XYZ orthogonal coordinate system is set in each drawing.

[0025] (First embodiment) A first embodiment will be described. The first embodiment relates to a shielded flat cable. Fig. 1 is a cross-sectional view showing a shielded flat cable according to the first embodiment. Fig. 1 shows a cross section perpendicular to the longitudinal direction of the shielded flat cable.

[0026] The shielded flat cable 100 according to the first embodiment is a cable used for electrically connecting devices or for wiring within devices. As shown in FIG. 1, the shielded flat cable 100 has a plurality of conductors 110 (four in this embodiment) arranged along a first surface 101 parallel to the XY plane. The plurality of conductors 110 are arranged in a planar shape. The plurality of conductors 110 extend, for example, in the X-axis direction and are arranged in parallel in the Y-axis direction. The X-axis direction is the longitudinal direction of the shielded flat cable 100, and the Y-axis direction is the width direction of the shielded flat cable 100. The conductors 110 are, for example, rectangular conductors and are made of metal such as copper foil or tin-plated soft copper foil. The conductors 110 are formed in a substantially flat rectangular shape in the YZ cross section. The number of conductors 110 included in the shielded flat cable 100 according to the first embodiment is four, but the number of conductors 110 is arbitrary. The direction in which the plurality of conductors 110 are arranged in parallel, that is, the Y-axis direction, is an example of the second direction.

[0027] The shielded flat cable 100 has a resin insulating layer 130 that sandwiches the first surface 101 and covers the multiple conductors 110. For example, the resin insulating layer 130 has a first resin insulating layer 131 on the -Z side of the first surface 101 and a second resin insulating layer 132 on the +Z side of the first surface 101. Resin insulating layer 13 A layer 0 is provided for ensuring the pressure resistance and high frequency characteristics of the shielded flat cable 100, and is made of a resin such as polyethylene, polypropylene, polyimide, polyethylene terephthalate, polyester, or polyphenylene sulfide.

[0028] The shielded flat cable 100 has an adhesive-attached shield layer 140 that covers the outer surface of the resin insulating layer 130. The adhesive-attached shield layer 140 includes a shield layer 141 and an anchor coat layer 142. The shield layer 141 is a layer that has a shielding function for noise countermeasures and ensuring high-frequency characteristics of the shielded flat cable 100, and is formed of a metal foil such as copper foil or aluminum foil. The anchor coat layer 142 is provided between the resin insulating layer 130 and the shield layer 141, and bonds the resin insulating layer 130 and the shield layer 141. The material of the anchor coat layer 142 is not limited. For example, a urethane-based anchor coat material in which a polyurethane base agent is mixed with an isocyanate-based hardener can be used as the material of the anchor coat layer 142. The anchor coat layer 142 is an example of an adhesive.

[0029] The adhesive-backed shielding layer 140 is disposed so that the anchor coat layer 142 is in contact with the outer surface of the resin insulating layer 130 (the surface opposite to the bonding surface of the first resin insulating layer 131 and the second resin insulating layer 132 to the conductor 110). The adhesive-backed shielding layer 140 continuously surrounds the outer surface of the resin insulating layer 130, and has a third bonding portion 150 where the anchor coat layers 142 are bonded together.

[0030] The two ends of the adhesive-attached shield layer 140 constituting the third bonding part 150 are bonded to the sides of the end on the -Y side of the resin insulating layer 130, and the third bonding part 150 is bent along the edge on the -Y side of the resin insulating layer 130. The end 153 of the third bonding part 150 is located at a position overlapping with the resin insulating layer 130 in the Z-axis direction. That is, the third bonding part 150 has a first part 151 extending in the Z-axis direction from the side of the end on the -Y side of the resin insulating layer 130, and a second part 152 connected to the first part 151 and extending toward the end on the +Y side of the resin insulating layer 130 in the Y-axis direction. The Z-axis direction is an example of a first direction.

[0031] The shielded flat cable 100 has a pair of flame-retardant resin films 160 covering the outer surface of the adhesive-attached shield layer 140. The pair of resin films 160 includes a base layer 161, a flame-retardant insulating layer 162, and an anchor coat layer 163. The base layer 161 is a layer for ensuring the pressure resistance of the shielded flat cable 100, and is made of, for example, polyethylene terephthalate. The flame-retardant insulating layer 162 is a layer for bonding the resin insulating layer 130 or the shield layer 141 to the base layer 161 while ensuring the flame retardancy, pressure resistance, deterioration resistance, etc. of the shielded flat cable 100, and is made of, for example, a thermoplastic resin material. For example, a thermoplastic polyester resin containing a phosphorus-based flame retardant or a nitrogen-based flame retardant can be used as the flame-retardant insulating layer 162. Between the base layer 161 and the flame-retardant insulating layer 162, an anchor coat layer 163 for bonding the base layer 161 and the flame-retardant insulating layer 162 is provided. There are no limitations on the material of the anchor coat layer 163. For example, it is preferable to use the same material as the anchor coat layer 142 as the material of the anchor coat layer 163. The anchor coat layer 163 may have flame retardancy.

[0032] In the Y-axis direction, the dimensions of the resin film 160 are larger than the dimensions of the resin insulating layer 130 and the dimensions of the adhesive-attached shielding layer 140. In the Y-axis direction, both ends of the resin film 160 extend outward beyond both ends of the resin insulating layer 130 and the adhesive-attached shielding layer 140. The pair of resin films 160 has a first bonding portion 11 in which the -Y side end of one resin film 160 and the -Y side end of the other resin film 160 are bonded together, and a second bonding portion 12 in which the +Y side end of one resin film 160 and the +Y side end of the other resin film 160 are bonded together. That is, the pair of resin films 160 has the first bonding portion 11 and the second bonding portion 12 bonded together. For example, in the Y-axis direction, the shielding layer 141 is disposed between the first bonding portion 11 and the second bonding portion 12. In the first bonding portion 11 and the second bonding portion 12, the base material layers 161 of a pair of resin films 160 are bonded to each other via a flame-retardant insulating layer 162 and an anchor coat layer 163. The entire surfaces of both end portions of the resin insulating layer 130 and the adhesive-backed shielding layer 140 are covered by the pair of resin films 160.

[0033] The outer peripheral surface of the shield layer 141 has a first plane 21 with which the first bonding portion 11 contacts and a second plane 22 with which the second bonding portion 12 contacts. For example, a pair of resin films 160 are bonded together on the first plane 21 and the second plane 22. In addition, an end 153 of the third bonding portion 150 is spaced apart from the first bonding portion 11 and the second bonding portion 12.

[0034] In the shielded flat cable 100, the flame-retardant insulating layer 162 and the shield layer 141 protect the resin insulating layer 130 from a flame approaching from the Z-axis direction. In addition, there is a risk that a flame approaching the end in the width direction (Y-axis direction) may penetrate into the first bonding part 11 or the second bonding part 12, but since the first plane 21 is in contact with the first bonding part 11 and the second plane 22 is in contact with the second bonding part 12, the closed state of the shield layer 141 is maintained. Therefore, the resin insulating layer 130 is protected by the shield layer 141 and can be quickly extinguished. As a result, excellent flame retardancy can be obtained, and excellent results can be obtained in combustion tests such as the VW-1 test.

[0035] Since the end 153 of the third bonded part 150 is spaced apart from the first bonded part 11 and the second bonded part 12, better flame retardancy is obtained.

[0036] The third bonding part 150 has a first portion 151 and a second portion 152. That is, the third bonding part 150 is bent along the outer shape of the resin insulating layer 130. Furthermore, an end 153 is located at a position overlapping with the resin insulating layer 130 in the Z-axis direction. Therefore, the third bonding part 150 is less likely to open, and better flame retardancy is obtained.

[0037] In manufacturing the shielded flat cable 100, for example, the adhesive-backed shield layer 140 is disposed so as to surround the resin insulating layer 130, and the anchor coat layer 142 is bonded to the two ends thereof to form the third bonding part 150. In addition, it is easy to bend the third bonding part 150 so as to include the first portion 151 and the second portion 152. Therefore, the shielded flat cable 100 having excellent flame retardancy can be easily manufactured.

[0038] In addition, since the shield layer 141 is disposed between the first bonding portion 11 and the second bonding portion 12 in the Y-axis direction, a pair of resin films is disposed so as to cover the outer surface of the shield layer 141. 160 Easy to place.

[0039] Second embodiment A second embodiment will now be described. Fig. 2 is a cross-sectional view showing a shielded flat cable according to a second embodiment. The second embodiment differs from the first embodiment mainly in the configuration of the adhesive-backed shielding layer.

[0040] 2, the shielded flat cable 200 according to the second embodiment has an adhesive-backed shield layer 240 instead of the adhesive-backed shield layer 140. The adhesive-backed shield layer 240 includes a first adhesive-backed shield layer 240A and a second adhesive-backed shield layer 240B. Like the adhesive-backed shield layer 140, the first adhesive-backed shield layer 240A and the second adhesive-backed shield layer 240B each include a shield layer 141 and an anchor coat layer 142. In the Y-axis direction, the dimensions of each of the first adhesive-backed shield layer 240A and the second adhesive-backed shield layer 240B are larger than the dimensions of the resin insulation layer 130.

[0041] The first adhesive shield layer 240A covers the -Z side outer surface of the first resin insulating layer 131, and the second adhesive shield layer 240B covers the +Z side outer surface of the second resin insulating layer 132. The adhesive shield layer 240 has a third bonding portion 250A in which the anchor coat layers 142 at the -Y side end of the first adhesive shield layer 240A and the -Y side end of the second adhesive shield layer 240B are bonded together. The adhesive shield layer 240 has a third bonding portion 250B in which the anchor coat layers 142 at the +Y side end of the first adhesive shield layer 240A and the +Y side end of the second adhesive shield layer 240B are bonded together.

[0042] The third bonding portion 250A is bent along the edge on the -Y side of the resin insulating layer 130. An end 253A of the third bonding portion 250A is located at a position overlapping with the resin insulating layer 130 in the Z-axis direction. That is, the third bonding portion 250A has a first portion 251A extending in the Z-axis direction from the side of the end on the -Y side of the resin insulating layer 130, and a second portion 252A connected to the first portion 251A and extending toward the end on the +Y side of the resin insulating layer 130 in the Y-axis direction.

[0043] The third bonding portion 250B is bent along the edge on the +Y side of the resin insulating layer 130. An end 253B of the third bonding portion 250B is located at a position overlapping with the resin insulating layer 130 in the Z-axis direction. That is, the third bonding portion 250B has a first portion 251B extending in the Z-axis direction from the side of the end on the +Y side of the resin insulating layer 130, and a second portion 252B connected to the first portion 251B and extending toward the end on the -Y side of the resin insulating layer 130 in the Y-axis direction.

[0044] As in the first embodiment, the shield layer 141 Outer surface of has a first plane 21 with which the first bonding portion 11 contacts and a second plane 22 with which the second bonding portion 12 contacts. For example, a pair of resin films 160 are bonded together on the first plane 21 and the second plane 22. In addition, an end 253A of the third bonding portion 250A and an end 253B of the third bonding portion 250B are spaced apart from the first bonding portion 11 and the second bonding portion 12.

[0045] The other configuration is similar to that of the first embodiment.

[0046] The shielded flat cable 200 according to the second embodiment also provides excellent flame retardancy.

[0047] In manufacturing the shielded flat cable 200, for example, the first adhesive shield layer 240A and the second adhesive shield layer 240B are arranged to sandwich the resin insulation layer 130 in the Z-axis direction, and the anchor coat layer 142 is bonded to the ends of these layers to form the third bonding parts 250A and 250B. In addition, it is easy to bend the third bonding part 250A to include the first part 251A and the second part 252A, and it is also easy to bend the third bonding part 250B to include the first part 251B and the second part 252B. Therefore, it is easy to process the first adhesive shield layer 240A and the second adhesive shield layer 240B, and it is easy to manufacture the shielded flat cable 200 having excellent flame retardancy.

[0048] Third embodiment A third embodiment will now be described. Fig. 3 is a cross-sectional view showing a shielded flat cable according to a third embodiment. The third embodiment differs from the first embodiment and the like mainly in the configuration of the adhesive-backed shielding layer.

[0049] As shown in FIG. 3, a shielded flat cable 300 according to the third embodiment has an adhesive-backed shielding layer 240, similar to the second embodiment, and the adhesive-backed shielding layer 240 has third bonding portions 250A and 250B.

[0050] The third bonding portion 250A includes a tightening portion 354A provided between the resin insulating layer 130 and the first bonding portion 11 in the Y-axis direction. The tightening portion 354A has a first portion 251A extending in the Z-axis direction and a second portion 252A connected to the first portion 251A and extending toward the end of the resin insulating layer 130 on the +Y side in the Y-axis direction.

[0051] The third bonding portion 250B includes a tightening portion 354B provided between the resin insulation layer 130 and the second bonding portion 12 in the Y-axis direction. The tightening portion 354B has a first portion 251B extending in the Z-axis direction and a second portion 252B connected to the first portion 251B and extending toward the end of the resin insulation layer 130 on the -Y side in the Y-axis direction.

[0052] As in the first embodiment, the shield layer 141 Outer surface of has a first plane 21 with which the first bonded portion 11 contacts and a second plane 22 with which the second bonded portion 12 contacts. For example, a pair of resin films 160 are bonded together on the first plane 21 and the second plane 22. An end 253A of the third bonded portion 250A is provided inside the seaming portion 354A and is spaced apart from the first bonded portion 11 and the second bonded portion 12. An end 253B of the third bonded portion 250B is provided inside the seaming portion 354B and is spaced apart from the first bonded portion 11 and the second bonded portion 12.

[0053] The other configuration is similar to that of the second embodiment.

[0054] Excellent flame retardancy can also be obtained by the shielded flat cable 300 according to the third embodiment. In particular, the third bonding parts 250A and 250B are less likely to open, and thus more excellent flame retardancy can be obtained.

[0055] In manufacturing the shielded flat cable 300, for example, the first adhesive shield layer 240A and the second adhesive shield layer 240B are arranged to sandwich the resin insulation layer 130 in the Z-axis direction, and the anchor coat layer 142 is bonded to the ends of these layers to form the third bonded parts 250A and 250B. It is also easy to bend the third bonded part 250A to include the tightening part 354A, and to bend the third bonded part 250B to include the tightening part 354B. This makes it easy to manufacture the shielded flat cable 300 with excellent flame retardancy.

[0056] As in the first embodiment, the third bonded portion 150 may be formed using one adhesive-attached shield layer 140, and the third bonded portion 150 may be rolled up to form a rolled up portion.

[0057] (Fourth embodiment) A fourth embodiment will now be described. Fig. 4 is a cross-sectional view showing a shielded flat cable according to a fourth embodiment. The fourth embodiment differs from the first embodiment and the like mainly in the configuration of the adhesive-backed shielding layer.

[0058] As shown in FIG. 4, in the shielded flat cable 400 according to the fourth embodiment, the adhesive-backed shield layer 140 continuously surrounds the outer surface of the resin insulation layer 130, as in the first embodiment. In the fourth embodiment, the adhesive-backed shield layer 140 includes a third portion 443 and a fourth portion 444. The third portion 443 covers one surface 130A of the resin insulation layer 130 parallel to the first surface 101, and reaches the first plane 21. That is, the third portion 443 reaches the end portion (the end portion on the -Y side) of the resin insulation layer 130 on the first bonding portion 11 side in the Y-axis direction. The fourth portion 444 covers the surface 130A of the resin insulation layer 130 from above the third portion 443 in the vicinity of the end portion (the end portion on the -Y side) on the first bonding portion 11 side. The anchor coat layer 142 of the fourth portion 444 is provided between the shield layer 141 of the third portion 443 and the shield layer 141 of the fourth portion 444, and bonds the shield layer 141 of the third portion 443 and the shield layer 141 of the fourth portion 444 together.

[0059] As in the first embodiment, the shield layer 141 Outer surface of has a first plane 21 with which the first bonding portion 11 contacts and a second plane 22 with which the second bonding portion 12 contacts. For example, a pair of resin films 160 are bonded together on the first plane 21 and the second plane 22.

[0060] The other configuration is similar to that of the first embodiment.

[0061] The shielded flat cable 400 according to the fourth embodiment also provides excellent flame retardancy.

[0062] In manufacturing the shielded flat cable 400, for example, the adhesive-backed shield layer 140 is disposed so that one end reaches the end of the -Y side of the resin insulating layer 130, goes around the outer periphery of the resin insulating layer 130, and then the other end overlaps with the adhesive-backed shield layer 140. This makes it possible to easily manufacture the shielded flat cable 400 with excellent flame retardancy.

[0063] Fifth embodiment A fifth embodiment will now be described. Fig. 5 is a cross-sectional view showing a shielded flat cable according to a fifth embodiment. The fifth embodiment differs from the first embodiment and the like mainly in the configuration of the adhesive-backed shielding layer.

[0064] 5, a shielded flat cable 500 according to the fifth embodiment has an adhesive shield layer 240 instead of the adhesive shield layer 140. The adhesive shield layer 240 includes a first adhesive shield layer 240A and a second adhesive shield layer 240B. In the Y-axis direction, the dimension of the first adhesive shield layer 240A is larger than the dimension of the resin insulation layer 130, and the dimension of the second adhesive shield layer 240B is approximately the same as the dimension of the resin insulation layer 130.

[0065] The first adhesive shield layer 240A covers the outer surface of the -Z side of the first resin insulating layer 131, and the second adhesive shield layer 240B covers the outer surface of the +Z side of the second resin insulating layer 132. In the fifth embodiment, the second adhesive shield layer 240B includes a third portion 543, and the first adhesive shield layer 240A includes fourth portions 544A and 544B. The third portion 543 covers one surface 130A parallel to the first surface 101 of the resin insulating layer 130, and reaches both the first plane 21 and the second plane 22. That is, the third portion 543 reaches both the end of the resin insulating layer 130 on the first bonding portion 11 side (the end on the -Y side) and the end of the resin insulating layer 130 on the second bonding portion 12 side in the Y-axis direction (the end on the +Y side). The fourth portion 544A covers the surface 130A of the resin insulating layer 130 from above the third portion 543 in the vicinity of the end portion (the end portion on the -Y side) on the first bonding portion 11 side. The fourth portion 544B covers the surface 130A of the resin insulating layer 130 from above the third portion 543 in the vicinity of the end portion (the end portion on the +Y side) on the second bonding portion 12 side. The anchor coat layers 142 of the fourth portions 544A and 544B are provided between the shield layer 141 of the third portion 543 and the shield layer 141 of the fourth portions 544A and 544B, and bond the shield layer 141 of the third portion 543 to the shield layer 141 of the fourth portions 544A and 544B.

[0066] As in the fourth embodiment, the shield layer 141 Outer surface ofhas a first plane 21 with which the first bonding portion 11 contacts and a second plane 22 with which the second bonding portion 12 contacts. For example, a pair of resin films 160 are bonded together on the first plane 21 and the second plane 22.

[0067] The other configuration is similar to that of the fourth embodiment.

[0068] The shielded flat cable 500 according to the fifth embodiment also provides excellent flame retardancy.

[0069] In manufacturing the shielded flat cable 500, for example, the first adhesive shield layer 240A and the second adhesive shield layer 240B are arranged so as to sandwich the resin insulation layer 130 therebetween in the Z-axis direction. At this time, the second adhesive shield layer 240B is arranged so that one end reaches the first plane 21 and the other end reaches the second plane 22. In other words, one end of the second adhesive shield layer 240B reaches the end on the -Y side of the resin insulation layer 130 and the other end reaches the second plane 22. + The first adhesive shielding layer 240A is positioned so that it reaches the end on the Y side. Furthermore, the first adhesive shielding layer 240A is positioned so that both ends thereof overlap with the second adhesive shielding layer 240B. This makes it particularly easy to process the first adhesive shielding layer 240A and the second adhesive shielding layer 240B, and allows the shielded flat cable 500 with excellent flame retardancy to be easily manufactured.

[0070] Sixth embodiment A sixth embodiment will now be described. Fig. 6 is a cross-sectional view showing a shielded flat cable according to a sixth embodiment. The sixth embodiment differs from the first embodiment and the like mainly in that a shielding layer with an adhesive and a resin film is used.

[0071] As shown in FIG. 6, the shielded flat cable 600 according to the sixth embodiment has a plurality of conductors 110 and a resin insulating layer 130, similar to the first embodiment. The shielded flat cable 600 has a shielding layer 601 with an adhesive and a resin film covering the outer surface of the resin insulating layer 130. The shielding layer 601 with an adhesive and a resin film has a shielding layer 140 with an adhesive and a resin film 160. The shielding layer 140 with an adhesive includes a shielding layer 141 and an anchor coat layer 142, similar to the first embodiment, and the resin film 160 includes a base layer 161, a flame-retardant insulating layer 162, and an anchor coat layer 163, similar to the first embodiment. The shielding layer 141 has a second surface 102 and a third surface 103 opposite to the second surface 102, the anchor coat layer 142 is provided on the second surface 102, and the resin film 160 is provided on the third surface 103. For example, the adhesive shield layer 140 is integrated with the resin film 160. The anchor coat layer 142 is disposed closer to the resin insulating layer 130 than the resin film 160.

[0072] The adhesive and resin film-attached shielding layer 601 continuously surrounds the outer surface of the resin insulating layer 130. The adhesive and resin film-attached shielding layer 601 includes a fifth portion 605 and a sixth portion 606. The fifth portion 605 covers at least a part of one surface 130A of the resin insulating layer 130 parallel to the first surface 101. The fifth portion 605 may be spaced apart from both ends of the resin insulating layer 130 in the Y-axis direction. The sixth portion 606 covers the surface 130A of the resin insulating layer 130 from above the fifth portion 605. The anchor coat layer 142 of the sixth portion 606 is provided between the base layer 161 of the fifth portion 605 and the shield layer 141 of the sixth portion 606, and bonds the base layer 161 of the fifth portion 605 and the shield layer 141 of the sixth portion 606 together.

[0073] In the shielded flat cable 600, the flame-retardant insulating layer 162 and the shielding layer 141 protect the resin insulating layer 130. In addition, since the shielding layer 601 with adhesive and resin film is used and the resin films 160 are not bonded together, flames are unlikely to penetrate into the inside of the shielding layer 601 with adhesive and resin film. This makes it possible to obtain excellent flame retardancy and excellent results in combustion tests such as the VW-1 test.

[0074] In manufacturing shielded flat cable 600, for example, shield layer 601 with adhesive and resin film is arranged so that two ends overlap on surface 130A after wrapping around the outer periphery of resin insulating layer 130. This makes it possible to easily manufacture shielded flat cable 600 with excellent flame retardancy.

[0075] Seventh embodiment A seventh embodiment will now be described. Fig. 7 is a cross-sectional view showing a shielded flat cable according to the seventh embodiment. The seventh embodiment differs from the sixth embodiment and the like mainly in the arrangement of the fifth and sixth portions.

[0076] As shown in FIG. 7, in the shielded flat cable 700 according to the seventh embodiment, the adhesive- and resin-film-attached shielding layer 601 continuously surrounds the outer surface of the resin insulation layer 130, as in the sixth embodiment. However, the fifth portion 605 reaches one end (the end on the -Y side) of the resin insulation layer 130 in the Y-axis direction. The sixth portion 606 covers the surface 130A of the resin insulation layer 130 from above the fifth portion 605 in the vicinity of the end on the -Y side. As in the sixth embodiment, the anchor coat layer 142 of the sixth portion 606 is provided between the base layer 161 of the fifth portion 605 and the shielding layer 141 of the sixth portion 606, and bonds the base layer 161 of the fifth portion 605 and the shielding layer 141 of the sixth portion 606 together.

[0077] The other configuration is similar to that of the sixth embodiment.

[0078] The shielded flat cable 700 according to the seventh embodiment also provides excellent flame retardancy.

[0079] In manufacturing shielded flat cable 700, for example, shield layer 601 with adhesive and resin film is arranged so that one end reaches the end on the -Y side of resin insulation layer 130 and the other end goes around the outer periphery of resin insulation layer 130 and overlaps with shield layer 601 with adhesive and resin film. Therefore, shield layer 601 with adhesive and resin film is particularly easy to process, and shielded flat cable 700 with excellent flame retardancy can be easily manufactured.

[0080] Eighth embodiment An eighth embodiment will now be described. Fig. 8 is a cross-sectional view showing a shielded flat cable according to an eighth embodiment. The eighth embodiment differs from the sixth embodiment and the like mainly in the configurations of the adhesive and the shielding layer with a resin film.

[0081] 8, a shielded flat cable 800 according to the eighth embodiment has a shielding layer 801 with an adhesive and a resin film instead of the shielding layer 601 with an adhesive and a resin film. The shielding layer 801 with an adhesive and a resin film includes a first shielding layer 801A with an adhesive and a resin film and a shielding layer 801B with a second adhesive and a resin film. In the Y-axis direction, the dimension of the shielding layer 801A with the first adhesive and a resin film is larger than the dimension of the resin insulating layer 130, and the dimension of the shielding layer 801B with the second adhesive and a resin film is approximately the same as the dimension of the resin insulating layer 130.

[0082] The first adhesive and resin film-attached shielding layer 801A covers the -Z side outer surface of the first resin insulating layer 131, and the second adhesive and resin film-attached shielding layer 801B covers the +Z side outer surface of the second resin insulating layer 132. In the eighth embodiment, the second adhesive and resin film-attached shielding layer 801B includes a fifth portion 805, and the first adhesive and resin film-attached shielding layer 801A includes sixth portions 806A and 806B. The fifth portion 805 covers one surface 130A parallel to the first surface 101 of the resin insulating layer 130, and reaches both the -Y side end and the +Y side end of the resin insulating layer 130 in the Y-axis direction. The sixth portion 806A covers the surface 130A of the resin insulating layer 130 from above the fifth portion 805 in the vicinity of the -Y side end. Near the end of the sixth portion 806B on the +Y side, the sixth portion 806B covers the surface 130A of the resin insulation layer 130 from above the fifth portion 805. The anchor coat layers 142 of the sixth portions 806A and 806B are provided between the base material layer 161 of the fifth portion 805 and the shield layers 141 of the sixth portions 806A and 806B, and bond the base material layer 161 of the fifth portion 805 to the shield layers 141 of the sixth portions 806A and 806B.

[0083] The other configuration is similar to that of the sixth embodiment.

[0084] The shielded flat cable 800 according to the eighth embodiment also provides excellent flame retardancy.

[0085] In manufacturing the shielded flat cable 800, for example, the first adhesive and resin film-attached shielding layer 801A and the second adhesive and resin film-attached shielding layer 801B are arranged so as to sandwich the resin insulation layer 130 in the Z-axis direction. At this time, one end of the second adhesive and resin film-attached shielding layer 801B reaches the end of the resin insulation layer 130 on the -Y side, and the other end of the second adhesive and resin film-attached shielding layer 801B reaches the end of the resin insulation layer 130 on the -Y side. +They are arranged so as to reach the end on the Y side. Also, first adhesive and resin film-equipped shielding layer 801A is arranged so that both ends overlap second adhesive and resin film-equipped shielding layer 801B. This makes it particularly easy to process first adhesive and resin film-equipped shielding layer 801A and second adhesive and resin film-equipped shielding layer 801B, and allows shielded flat cable 800 with excellent flame retardancy to be easily manufactured.

[0086] In addition, the shield layer 141 Even if the anchor coat layer is crushed, 142 and resin insulation layer 130 Even if there is a cavity due to non-bonding between the anchor coat layer 142 and the resin insulation layer 130, it is possible to suppress the penetration of flame into the resin insulation layer 130. For example, as shown in Fig. 9, in a shielded flat cable 400 according to the fourth embodiment, even if there is a cavity 149 due to non-bonding between the anchor coat layer 142 and the resin insulation layer 130, the resin insulation layer 130 can be protected from flame. Fig. 9 is a cross-sectional view showing the shielded flat cable according to the fourth embodiment in which a cavity is formed.

[0087] Although the embodiments have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications and changes are possible within the scope of the claims. [Explanation of symbols]

[0088] 11: First bonding section 12: Second lamination Department 2 1: 1st plane 22: 2nd plane 100: Shielded flat cable 101: 1st page 102:Second side 103:Side 3 110: Conductor 130: Resin insulation layer 130A: Surface 131: First resin insulating layer 132: Second resin insulating layer 140: Shielding layer with adhesive 141: Shield layer 142: Anchor coat layer 149: Hollow 150: 3rd bonding section 151: Part 1 152:Second part 153:Terminal 160: Resin film 161: Base material layer 162: Flame-retardant insulating layer 163: Anchor coat layer 200: Shielded flat cable 240: Shielding layer with adhesive 240A: 1st adhesive shield layer 240B: Second adhesive shielding layer 250A, 250B: 3rd bonding section 251A, 251B: Part 1 252A, 252B: 2nd part 253A, 253B: Terminal 300: Shielded flat cable 354A, 354B: Sealing section 400: Shielded flat cable 443: Third part 444: 4th part 500: Shielded flat cable 543: 3rd part 544A, 544B: 4th part 600: Shielded flat cable 601: Shielding layer with adhesive and resin film 605: 5th part 606: Part 6 700: Shielded flat cable 800: Shielded flat cable 801: Shielding layer with adhesive and resin film 801A: 1st adhesive and resin film shielding layer 801B: Shielding layer with second adhesive and resin film 805: 5th part 806A, 806B: Part 6

Claims

1. A plurality of conductors arranged in parallel along one another on a first surface; a resin insulating layer that sandwiches the first surface and covers the conductor; an adhesive-backed shield layer having an adhesive covering an outer surface of the resin insulation layer and a shield layer covering the outer surface of the adhesive; A pair of flame-retardant resin films covering the outer surface of the adhesive-backed shielding layer; having The pair of resin films has a first bonding portion and a second bonding portion bonded to each other, The outer peripheral surface of the shield layer is a first plane with which the first bonding portion is in contact; a second plane with which the second bonding portion is in contact; having the adhesive is provided between the resin insulation layer and the shielding layer, and is arranged so as to contact an outer surface of the resin insulation layer, and bonds the resin insulation layer and the shielding layer together; The adhesive-backed shielding layer continuously surrounds the outer surface of the resin insulation layer, and the adhesive-backed shielding layer has a third bonding portion where the adhesives are bonded together.

2. The shielded flat cable according to claim 1 , wherein an end of the third bonding portion is spaced apart from the first bonding portion and the second bonding portion.

3. The third bonding unit is a first portion extending in a first direction perpendicular to the first surface from a side of one end of the resin insulating layer in a second direction in which the plurality of conductors are arranged in parallel; a second portion connected to the first portion and extending in the second direction toward the other end of the resin insulation layer; 3. The shielded flat cable according to claim 1, further comprising:

4. The shielded flat cable according to claim 3 , wherein an end of the third bonding portion is located at a position overlapping the resin insulating layer in the first direction.

5. 5. The shielded flat cable according to claim 1, wherein the third bonding portion has a wound and tightened portion wound around a side of one end of the resin insulation layer in the second direction in which the multiple conductors are arranged in parallel.

6. the shield layer is a pair of shield layers covering upper and lower surfaces of the resin insulation layer, 6. The shielded flat cable according to claim 1, wherein the adhesive of one of the shielding layers and the adhesive of the other of the shielding layers are bonded to each other in the third bonding portion.

7. A plurality of conductors arranged in parallel along one another on a first surface; a resin insulating layer that sandwiches the first surface and covers the conductor; an adhesive-backed shield layer having an adhesive covering an outer surface of the resin insulation layer and a shield layer covering the outer surface of the adhesive; A pair of flame-retardant resin films covering the outer surface of the adhesive-backed shielding layer; having The pair of resin films has a first bonding portion and a second bonding portion bonded to each other, The outer peripheral surface of the shield layer is a first plane with which the first bonding portion is in contact; a second plane with which the second bonding portion is in contact; having the adhesive is provided between the resin insulation layer and the shielding layer to bond the resin insulation layer and the shielding layer, The adhesive shielding layer comprises: A conductive layer is formed on the outer surface of the resin insulating layer. a third portion covering one surface of the resin insulation layer parallel to the first surface and reaching the first plane; a fourth portion covering the one surface of the resin insulation layer from above the third portion; having the shield layer is a pair of shield layers covering upper and lower surfaces of the resin insulation layer, the third portion is included in one of the shield layers, The fourth portion is a shielded flat cable included in the other shield layer.

8. 8. The shielded flat cable according to claim 1, wherein the shielding layer is disposed between the first bonding portion and the second bonding portion in a second direction in which the plurality of conductors are arranged in parallel.

9. A plurality of conductors arranged in parallel along one another on a first surface; a resin insulating layer that sandwiches the first surface and covers the conductor; A shielding layer with an adhesive and a resin film; having The adhesive and resin film-attached shielding layer is an adhesive-backed shield layer having an adhesive covering an outer surface of the resin insulation layer and a shield layer; A flame-retardant resin film; having the shield layer has a second surface and a third surface opposite to the second surface, the adhesive is provided on the second surface; the resin film is provided on the third surface, the adhesive is disposed on the resin insulating layer side of the resin film, The adhesive and resin film-attached shielding layer is a fifth portion covering at least a part of one surface of the resin insulation layer parallel to the first surface; a sixth portion covering the one surface of the resin insulation layer from above the fifth portion; A shielded flat cable having a

10. The shielded flat cable according to claim 9 , wherein the fifth portion reaches one end of the resin insulation layer in the second direction in which the plurality of conductors are arranged in parallel.

11. the shield layer is a pair of shield layers covering upper and lower surfaces of the resin insulation layer, the fifth portion is included in one of the shield layers, 11. The shielded flat cable according to claim 9, wherein the sixth portion is included in the other of the shield layers.

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